Improve "Add Loyalty Card" > "Enter Card" > "Select Barcode" screen

[vertigo220]

When I first started using this yesterday, it took me a while to figure out how to choose different barcodes. Due to the size of my screen, I saw exactly one barcode and its name (AZTEC) and thought that was it, not realizing I had to scroll to see the others. I kept trying to tap the barcode and the name, thinking it would open a pop-up to select a different one. This could be made easier to understand for new users by doing one of two things (or both):

1. Change the text from "Enter the card ID then select the image..." to something like "Enter the card ID then scroll and select the image..."

2. Add a scroll bar, and make it stand out, to make it clear there's more below.

I realize this is a pretty minor thing, and most people will figure it out right away or fairly quickly, but I can imagine some people will struggle with it and possibly give up on the app because of it, which would be a shame.